5 * More than enough for everybody ;) The huge number of majors
6 * is a leftover from 16bit dev_t days, we don't really need that
12 * This is limited by the naming scheme enforced in sd_probe,
13 * add another character to it if you really need more disks.
15 #define SD_MAX_DISKS (((26 * 26) + 26 + 1) * 26)
18 * Time out in seconds for disks and Magneto-opticals (which are slower).
20 #define SD_TIMEOUT (30 * HZ)
21 #define SD_MOD_TIMEOUT (75 * HZ)
24 * Number of allowed retries
26 #define SD_MAX_RETRIES 5
27 #define SD_PASSTHROUGH_RETRIES 1
30 * Size of the initial data buffer for mode and read capacity data
32 #define SD_BUF_SIZE 512
35 struct scsi_driver *driver; /* always &sd_template */
36 struct scsi_device *device;
39 unsigned int openers; /* protected by BKL for now, yuck */
40 sector_t capacity; /* size in 512-byte sectors */
44 unsigned previous_state : 1;
45 unsigned WCE : 1; /* state of disk WCE bit */
46 unsigned RCD : 1; /* state of disk RCD bit, unused */
47 unsigned DPOFUA : 1; /* state of disk DPOFUA bit */
49 #define to_scsi_disk(obj) container_of(obj,struct scsi_disk,dev)
51 static inline struct scsi_disk *scsi_disk(struct gendisk *disk)
53 return container_of(disk->private_data, struct scsi_disk, driver);
56 #define sd_printk(prefix, sdsk, fmt, a...) \
58 sdev_printk(prefix, (sdsk)->device, "[%s] " fmt, \
59 (sdsk)->disk->disk_name, ##a) : \
60 sdev_printk(prefix, (sdsk)->device, fmt, ##a)
62 #endif /* _SCSI_DISK_H */